Electronics > Repair

fluke 289 problem

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Ugur:
You may see different values ​​on the card. You can put the rotary position in ACV and measure again.

anwfeb:

--- Quote from: Ugur on November 07, 2024, 07:00:11 am ---You may see different values ​​on the card. You can put the rotary position in ACV and measure again.

--- End quote ---

and it was still the same, until i turned the switch to the Ohm menu, even to the mA / A menu.

parawizard:
If removing RT1 fixes it are you sure its not some kind of really high resistance short at the jacks or something? Conductive goo?

Ugur:
There is a parallel capacitance connected to it so you may measure it differently. I don't think there is a mistake but if you want to be sure you should remove it and try it.
Have you tried heating the card with a hot air station?

anwfeb:

--- Quote from: Ugur on November 07, 2024, 07:30:22 am ---There is a parallel capacitance connected to it so you may measure it differently. I don't think there is a mistake but if you want to be sure you should remove it and try it.
Have you tried heating the card with a hot air station?

--- End quote ---

i haven't done that, i just cleaned with a brush, so that no dust sticks, but haven't tried heating with hot air. Maybe this is the last solution if i don't find any damage, i will try washing with alcohol and drying with hot air.

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